Measuring device for textile machinery incorporating a swift



March 22, 1927. `1, s.'2,124

H. SCHWEITER` MEASURING DEVICE FOR TEXTILE MACHINERY INCORPORATING- A SWIFT Fired Feb. 13, 1924 Patented Mar. Z2, 1927.

starts HANS SCHWEITER, UF HORG-EN, SWITZERLAND.

MEASURING DEVICE FOR TEXTILE :MACHINERY 'INCORPORATING A. SWIFT.

.Application filed February 13, 1924, Serial No. 692,580, and in Switzerland March 18, 1923.

This invention relates to measuring devices for that kind of textile machinery incorporating a swift in which after a predetermined number of revolutions of the swift or after a predetermined travel of a measuring screw the machinery is automatically stopped and in which the swift is mounted on an arm.

T he main object of my invention is to enable disengagement of the drive of the measuring screw to take place automatically and allow automatic ret-urn of the measuring screw to the initial position and to then cause the said drive to again become autoinatically engaged at the proper time.

I attain this object by the mechanism illustrated in the accompanying drawings, wherein- Figure 1 is a front elevation, partly in section of a measuring device,

Figure 2 a view in vertical section on line 2w2 of Figure 1 regarded in the direction of the arrow 2. r

Figure 3 is a view in vertical section on line 3-3 of Figure 1 regarded in the direction of the arrow 3.

Figure 4 is a view in vertical section similar to Figure 3 but with operative parts of the mechanism shown moved into another position.

Figures 5 and 6 are detached sections in side view illustrating details.

Referring to the drawings, the swift 1, Figure 2, is mounted on an arm 2 which is oscillatable in a forward direction on a pin 4 fixed in the frame 3 of the machine. A pinion wheel 5. is seated on the swift boss and meshes with a pinion wheel 5 seated on a shaft 6 which is mounted in the frame 3. A pinion wheel 7 and a belt pulley 3 are also seated on the shaft 6.y and the belt pulley S is connected to ay driven belt pulley (not shown) by means of a belt 10 which passes over a tension pulley 9, Figures 3 and 4. The tension pulley 9 is adjustably carried by a two-armed hand operated tension lever 11 which is loosely mounted on the shaft 6. Tn order to enable the tension lever 11 to be maintained in its tensioning` position. Figure 4, the following locking device is provided. A three-armed lockinglever 13. 14,` is rotatably mounted on a stud 12 mounted in the frame 3. The arm 13 serves as a hand grip, the arm 14 has a shoulder 16 adapted to engage a locking roller 17 mounted on the tension lever 11, and the arm 15 carries a stop screw 18 and the end of a spring 19 the other end of which is fixed to the frame, the spring acting to impart a turning movement to the locking lever 13 14, 15 in a right hand direction and `hold it in the locking position, Figure 4.

In this position the stop screw 18 bears against an angular lever 21 mounted loose on a shaft 20. y

The locking lever 13, 14,15is provided with a brake cheek 22 which is intended, under the pressure of the roller v17 of the released tension lever 11 on the arm 14 .of the locking lever 13, 14, 15 to press itself against the inner surface 71 of the belt pul ley 8 and brake the said belt pulley. A rod 23 with collar 24 and spring 25is pivotally connected to one arm of thevangular lever 21. This spring presses on the one hand against the collar 24 which is adjustable for the purpose of regulating the spring tension and on the other hand against a stud 26 having a hole in which the rod 23 slides. The stud 26 is provided on a locking pawl 2'? and the spring 25 therefore acts on the pawl 27 through the stud 26` The stu-d 26 is mounted to swivel on the pawl .27 to allow freedom of movement between the rod 23 and the pawl 27. This pawl is intended, as will be hereinafter more fully explained, to hold the tension lever 11 in its position of release (Figure up to a predetermined moment. The tension lever 11 is provided with a lateral catch pin 28. A pin .29 limits the turning movement of the angular lever 21 in the left hand direction. The pinion 5', Figure 1, is provided with a carrier pin 30 which at each rotation imparts a partial rotation to a wheel 31 secured by means of a screw 72 to a shaft 31a journalled in the frame The shaft 31il furthermore carries a disc 32 having a driving pin 33, Figures 1 and 2. which at each rotation of the disc 32 imparts a partial rotation to a second toothed wheel 34. The toothed wheel 34 is provided with an elongated pinion 35 which meshes with a toothed wheel 36. The wheel 36 is .fixed on the measuring screw 37 and the said measuring screw is screwed into a swing' frame 38 mounted loose on the shaft 20. The left hand end of the measuring screw 37 carries a member 39 serving as a cord drum and provided with two flanges 40 and 41 provided with pins 42 and 43 respectively. The pin 42 is intended to press against the angular lever 21 after a predetermined number of revolutions of the measuring screw 37 and to turn it in a right hand direction. The pin 43 is intended to limit the rotary return movement of the measuring spindle 37 by impinging on a pin 46 which is slidably mounted on the swing frame 38, the return movement of the measuring screw 37 being effected by a cord 44 wound on the member 39 and having a weight 45 suspended on it.

' The pin 46 is connected to a pointer 50 by means of a cross pin 47 the pointer 50 being pivotally mounted at 48 on the swing frame 38 and having a knob 49.

A scale 51 provided on the swing frame 38 enables the position of the pointer and therefore the measured lengths to be read off, and thelengths indicated can be varied between, for example, 225 metres and 3600 metres by the aid of suitable changes in the transmission ratios between the shaft 6 and the shaft 31a. Measuring always takes place from the set number of metres to the zero point.

A ring 52, Figures 1 and 6. is seated on the right hand end of the shaft 2O and has two tappets 53 and 54 between which engages the bent end of a rod 55 connected to the swift carrying arm 2. As will be observed from the drawing, the swing frame 38 has a rectangular gap in it where it is engaged by the shaft 20, and the shaft 2O crosses the gap and supports the frame 38 at both sides of the gap. A cam 56 is situated in the said gap and is fixed to that part of the shaft 2O which crosses the gap. The shaft 20 can therefore oscillate the cam 56 in the said gap without oscillating the frame 38. The cam 56 has two abutment surfaces 57 and 58. The surface 57 is intended to impinge on a surface 59 of the swing frame 38 and to impart thereto a rearward swing, whilst the surface 58 is intended to impinge against a surface 60 of the swing frame 38 and swing the frame in a forward direction. The parts 56. 57. 58. 59 and 60 therefore form a so-called slipping coupling between the shaft 2() and the swing frame 38. A spring 61, connected on the one hand to the frame 3 and on the other hand to the swing frame 38 actsto turn the swing frame 38 forwardly, that is to say towards the right hand in the view illustrated in Figure k2 and to yieldingly bring the wheel 36 again into engagement with the elongated pinion 35 if it has been brought out of engagement therewith, the wheel 36 then being positively held in engagement by the pressure of the surface 58 Vagainst the swing frame 38.

On the left hand end of the shaft 2O is provided a so-called springrocler, Figures 1 and 5. This spring rocker consists of a sector 62 possessing two stop screws 63 and 64 which co-operate with stop surfaces 65 and 66 of the frame to limit the angular movement of the swing frame 38. A spring 67 has one end connected to the frame 3 at a point vertically beneath the axis of the shaft 2O and has its other end attached to the sector 62 at the middle thereof. The drive of the yarn guide is effected from the wheel 7 by means of a wheel 68 and a chain drive 69, 70.

rfhe mode of operation on the hereinbefore described measuring device is as follows During running of the machine the'starting and stopping device is in the position illustrated in Figure 4. The belt 10 is held tight by the tension lever 11 and the said lever is locked by the locking lever 13, 14, 15.

The measuring screw 37 is rotated from the belt pulley 8 by means of the gearing 30 to 34 and the gearing` 35, 36. The swift 1 has motion imparted to it through the gearing 5, 5 and the yarn guide (not shown) is operated from the gearing 7, 68 and the chain gearing 69, 70.

When the measuring screw 37, which is moving towards the left, F igine 1, reaches the Zero point, the pin 42 of the measuring screw impinges against the angular lever 21 and turns it towards the right hand, Figure 3. The lever 21 acts on the stop screw 18 on the lever arm 15 and the locking lever 13, 14, 15 is thereby turned against the. pull of the spring 19. The roller `17 of the tensien lever 11 is thus relieved from the retaining action of the shoulder 16. rPhe tension lever 11 is thereby freed and swings out of the position shown in Figure 4 into the position shown in Figure 3 and the driving belt 10 is thereby loosened and the drive ceases. At the saine time the rod ..3 is lifted, the spring 25 is compressed, and the pawl 27 snaps behind the catch pin 28 of the tension lever 11 thus preventing the said lever from being operated accidentally with the result of tightening the belt, until t-he spring 25 is released. On the oscillation of the tension lever 11 out of the position shown rin Fig. 4 into that shown in Figure 3. the roller 17 presses on the arm 14 cf the locking lever 13. 14, 15 with the result that the brake shoe is pressed against the belt pulley 8 and brakes the same.

Furthermore the swift carrying arm 2 is swung forwards, that is to say towards t-he right hand in Figure 2, in order to take off the hank or skein.

On this movement taking place` the shaft 20 turned by the rod and the tappet in the direction of the arrow F, `Figure 6. As soon as the spring 67 has passed its dead point during this turning movement, the said si'iring conn'iletes the turning movement effhe shaft 20 in the hereinbefore named direction. 'The cani surface 57 impinges against the frame surface 59 and oscillates the fra-me 238 in the return direction, that is to say towards the left in Figure 2, whereby the wheel vlo becomes disengaged from the elongated pinion 35 and thenieai'mrimr screw 2li' is freed. The. weight do and cord'iet now rotate the screw Si' baci-:wards until the pin sl'l impinges agxfiirst the pin tti which has been adjusted to give the desired measureof length.

Owing;` to the rotation of the shaft 2t) effected by the spring' 6T in the direction of the arrow P, .Figrure '(5. therod 2?) has become lifted to a further extent and the spring 25 has become 'more compressed.

After the. hanl; or slein has been removed, the swift carrying arm 2 is swung back into its initial position and the rod thereby acts on the tappet 53 and 'rotates the shaft 220 in the direction of the arrow Q, Figure Immediately the cam surface 57 leaves the swine; frame S8 free. the spring G1 again swings the frame in a forward direction that is to sai7 towards the right hand in Figure 9, and the wheel 36 comes into yielding engagement with the elongated pinion 35. As soon as the spring 67 has passed the dead point during the return movement of the shaft 2O the 'aid spring returns the shaft 2O full)7 into the initial position and the cam surface 58 then renders engagement of the wheels and 35 positive by impinging against the frame. surface ($0.v @n rotation of the shaft 2O in the direction of the arrow Q, the angular lever 21 is brought into its initial position7 the rod @Sis lowered and the spring 25 is released from compression. rlhe pawl 27 is therefore free to fall by its own weight and releases the tension lever 11. This lever can therefore now be moved into its tightenino' position7 Figure il, and when so moved the roller 17 again comes under the retaining` action of the shoulder 16 and the tension lever becomes locked. On the small rotarv movement in a right hand direction of the locking; lever 1?)q 14. 15 when; the roller 17 falls againstthe shoulder 16, the brake shoe Q2 is caused to be lifted away from the belt pulley 8 b v the said movement. The machine then again commences a fresh winding operation.

At the left hand end of the shaft 6, Fig'- ure 1, a wheel corresponding` to the wheel 5', but without a drivinsoT pin 30 can be provided for operating a second swift. This second swift would be arried b v a. second swift carrying arm 2 which would be oscillatabl1 mounted on an extended pin 4. ln this arrangement one n'ieasuring device would therefore serve two swifts. rlfhe two arms 2 provided in this arrangement would be connected together in order to ensure their simultaneous movement.

What l claim is l. A measuring` device for a textile ma- `chine incorporating a swift; comprising a measuring` screw mounted on the machine; an oscillatable swift carrying` arm mounted on the machine; a measuring screw drive for displacing the measurng screw from an initial position; disenraningi means for throwing' the measuring screw drive out of action; actuating means on thesaid arm for actuatingl the disengaging means; means actingl on the measuring screw to return it into its initial position on operation of the drive disengagring means; and engaging means'on the said arm for bringing the measuring screw drive. into action.

2. A measuring;` device for a textile machine incorporating a swift. comprisingl a measuring screw mounted on the machine; an oscillatable arm mounted on the machine and carrying the swift; a measuring` screw drive on the machine for rotating,` the screw out of an initial position; means operated from the said arm for disengaging the measuring screw drive; means acting on the measuring' screw to automatically return it to the said initial position on disengagement of the said drive; and adjustable stop means provided on the machine for regulating the said initial position of the measuring screw and thereby the measure of length.

3. A measuring device for a textile machine incorporating a swift. comprising' a measuring screw mounted on the machine, an oscillatable arm mounted. on the machine and carrying the swift; a disenftrageable measuring;` screw drive for rotating;` the screw out of an initial position; means acting on the measuring screw to auton'iaticallv return it to the said initial position on disengagen'ient of the said drive; stop means provided on the machine for regulating the return movement of the measuring' screw and thereby the measure of length; pointer means connected to the stop means for adjusting the stop means; a drive disengaginer device on the machine for stopping), the swift; and two stop members on the machine in operative connection with the meastiring; screw, one of which cooperates with the said stop means to bring into action the nieasuring screw returning means and the other of saidv stop members brings into action the said drive disengaging device.

4. A measuring device for a textile machine incorporating a swift; comprising a frame provided on the machine; a measuring' screw mounted on the frame; an oscillatalole swift carryingarm mounted on the machine; a measuring screw drive on the machine to rotate the Iscrew out of an initial position; drive disengagingr means operated from the said arm; means acting on the measuring screw for returning it to the said initial position on disengagement of the said drive; stop means provided on the machine for regulating said initial position of the measuring screw and thereby the measure of length; a belt drive for the swift; a belt tension controlling' lever on the machine for rendering,r the belt drive operative and inoperative; locking means for locking the belt tightening lever in its tightening position; an angular lever for throwing the locking means out of action; and means on the measuring screw for actuating the angular lever.

5. A measuring' device for a textile machine incorporatiima swift, comprising a measuring); screw mounted on the machine; an oscillatable swift carrying arm mounted on the machine: a measuring screw drive on the machine for moving the measuringscrew out of an initial position; means set in motion by movement of the said arm for automatically returning the measuring screw to the said initial position; stop means provided on the machine for adjusting' the said initial position and thereby the measure of length; a belt drive for the swift: a belt tension controlling lever on the machine for rendering the belt drive operative; an angular lever on the machine acting on the belt tension controlling' lever: a pin on the measuring' screw acting on the angular lever; a catch pin provided on the belt tension controlling' lever; a lockingpawl oscillatably mounted on the machine to engage the catch pin; and a rod resiliently connected to the pawl and controlled by the angular lever for producing engagement of the pawl with the catch pin and thereby locking the belt tensioning' lever in inoperative position.

6. A measuring device for a textile machine incorporating swift, comprising a governing shaft which is o-scillatably mounted on the machine; an arm oscillatably mounted on the governing shaft; a measuring screw rotatably mounted on the said arm to oscillate therewith; a driven toothed wheel on the machine; a toothed wheel fixed to the measuring` screw and adapted to mesh with the driven toothed wheel and thereby rotate the measuring screw; a member provided on the governing shaft to oscillate therewith; abutment surfaces on the said member; and complementary abutment surfaces on the said arm lying' in the path of the abutment surfaces on the said member and acted on by the last named surfaces for transmitting a part of the oscillatory movement of the governing' shaft to the said arm and thereby alternately bringing the toothed Wheel on the measuring screw into and out of engageinent with the driven toothed wheel on the machine.

7. A measuring; device for a textile machine incorporatingy a swift, comprisingY a governing shaft oscillatabliv mounted on the machine; an arm oscillatablv mounted on the governing` shaft; a measuring screw rotatably mounted. on the said arm to oscillate therewith; a driven ytoothed wheel on the machine; a toothed wheel fixed to the measuring screw and adapted to mesh with the driven toothed wheel and thereby rotate the measuring screw; a member provided on the governingl shaft to oseillat@ therewith; abutment surfaces on the said member; complementary abutment surfaces on the said arm acted on by the said abutment surfaces on oscillation of the governing shaft in one direction for oscillating' the frame and thereby moving` the toothed wheel on the measuring screw out of engagement with the driven toothed wheel; a collar provided on the governing' shaft for oscillating the said shaft; tappetarms provided on trie collar for oscillating); the collar; a swift carryingr arm oscillatably mounted on the machine; a rod connected to the swift carrying` arm and acting; on the said tappets for transmitting oscillatory movement in one direction from the swift carrying' arm to the tappets; and a spring shift means provided on the governing shaft for acting` on the said shaft in its direction of oscillation and thereby continuing to complet-ion the movement of the governing' shaft initiated by the swift carrying arm through the medium of the rod and capp-ets.

Signed at Zurich, in the Canton of Zurich, Switzerland; this 24 day of .l'ruiuarix 1924.

HANS SCHVVETER. 

